Least Upper Bound Axiom

A lower price bound is always interesting (taken on my commute) UPDATE: I got this email from a friend: So since the store exists we assume that the set of items in the store with prices is non-empty. The sign provides a lower bound. Thus in the real numbers we are guaranteed to have an infimum, but […]

Over the years, I’ve been taking math courses at various universities. With each step through the sequence, I happily enroll in the next course, thinking, ‘now THIS is going to be the course with all math majors in it, no complainers, no one whining about too much homework or too many chapters being covered.’ I […]